tee: increase TEE_MAX_ARG_SIZE to 4096

Increase TEE_MAX_ARG_SIZE to accommodate worst-case scenarios where
additional buffer space is required to pass all arguments to TEE.
This change is necessary for upcoming support for Qualcomm TEE, which
requires a larger buffer for argument marshaling.

Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Tested-by: Harshal Dev <quic_hdev@quicinc.com>
Signed-off-by: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h
index 9abb0f299549371d0ffd2c7b20bd2d59ef8ad6ef..a5466b503bfe4466774a6ed0affd7f922495f261 100644 (file)
--- a/include/uapi/linux/tee.h
+++ b/include/uapi/linux/tee.h
@@ -42,7 +42,7 @@
 #define TEE_IOC_MAGIC  0xa4
 #define TEE_IOC_BASE   0
 
-#define TEE_MAX_ARG_SIZE       1024
+#define TEE_MAX_ARG_SIZE       4096
 
 #define TEE_GEN_CAP_GP         (1 << 0)/* GlobalPlatform compliant TEE */
 #define TEE_GEN_CAP_PRIVILEGED (1 << 1)/* Privileged device (for supplicant) */